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Decode and pretty print inline asm operand descriptors.

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The INLINEASM MachineInstrs have an immediate operand describing each
original inline asm operand. Decode the bits in MachineInstr::print() so
it is easier to read:

  INLINEASM <es:rorq $1,$0>, $0:[regdef], %vreg0<def>, %vreg1<def>, $1:[imm], 1, $2:[reguse] [tiedto:$0], %vreg2, %vreg3, $3:[regdef-ec], %EFLAGS<earlyclobber,imp-def>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133901 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-06-27 04:08:29 +00:00
parent ca08dcc483
commit 7a2ecd3f99
1 changed files with 22 additions and 1 deletions
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23
lib/CodeGen/MachineInstr.cpp
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@ -1367,6 +1367,8 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const {
// Print the rest of the operands.
bool OmittedAnyCallClobbers = false;
bool FirstOp = true;
unsigned AsmDescOp = ~0u;
unsigned AsmOpCount = 0;
if (isInlineAsm()) {
// Print asm string.
@ -1380,7 +1382,7 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const {
if (ExtraInfo & InlineAsm::Extra_IsAlignStack)
OS << " [alignstack]";
StartOp = InlineAsm::MIOp_FirstOperand;
StartOp = AsmDescOp = InlineAsm::MIOp_FirstOperand;
FirstOp = false;
}
@ -1434,6 +1436,25 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const {
MO.print(OS, TM);
} else if (TM && (isInsertSubreg() || isRegSequence()) && MO.isImm()) {
OS << TM->getRegisterInfo()->getSubRegIndexName(MO.getImm());
} else if (i == AsmDescOp && MO.isImm()) {
// Pretty print the inline asm operand descriptor.
OS << '$' << AsmOpCount++;
unsigned Flag = MO.getImm();
switch (InlineAsm::getKind(Flag)) {
case InlineAsm::Kind_RegUse: OS << ":[reguse]"; break;
case InlineAsm::Kind_RegDef: OS << ":[regdef]"; break;
case InlineAsm::Kind_Imm: OS << ":[imm]"; break;
case InlineAsm::Kind_Mem: OS << ":[mem]"; break;
case InlineAsm::Kind_RegDefEarlyClobber: OS << ":[regdef-ec]"; break;
default: OS << ":[??" << InlineAsm::getKind(Flag) << ']'; break;
}
unsigned TiedTo = 0;
if (InlineAsm::isUseOperandTiedToDef(Flag, TiedTo))
OS << " [tiedto:$" << TiedTo << ']';
// Compute the index of the next operand descriptor.
AsmDescOp += 1 + InlineAsm::getNumOperandRegisters(Flag);
} else
MO.print(OS, TM);
}